Professor Hans Ingebretsen has been practicing martial arts since 1974, when he began his study of Danzan Ryu Ju Jitsu and Kodokan Judo with Sensei Ben Patterson at College of the Redwoods in Eureka, California. Continuing to study with Sensei Dale Kahoun, Hans began cross-training in a variety of other styles, eventually falling in love with kenpo. After moving to the San Jose area, Hans trained at Pacific Judo Academy with Professor Bill Montero and Sensei Brian Fitzgerald, competed as a member of the San Jose State judo team, and eventually wound up at the Pacific Coast Academy of Martial Arts, where he spent 20 years training with Shihan Russ Rhodes and Professor Sig Kufferath.